diff options
Diffstat (limited to 'lib/libc/locale/rune.c')
| -rw-r--r-- | lib/libc/locale/rune.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/lib/libc/locale/rune.c b/lib/libc/locale/rune.c new file mode 100644 index 0000000..bc4d07c --- /dev/null +++ b/lib/libc/locale/rune.c @@ -0,0 +1,173 @@ +/*- + * Copyright (c) 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Paul Borman at Krystal Technologies. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)rune.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ + +#include <rune.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <sys/types.h> +#include <sys/stat.h> + +_RuneLocale * +_Read_RuneMagi(fp) + FILE *fp; +{ + char *data; + void *lastp; + _RuneLocale *rl; + _RuneEntry *rr; + struct stat sb; + int x; + + if (fstat(fileno(fp), &sb) < 0) + return(0); + + if (sb.st_size < sizeof(_RuneLocale)) + return(0); + + if ((data = malloc(sb.st_size)) == NULL) + return(0); + + rewind(fp); /* Someone might have read the magic number once already */ + + if (fread(data, sb.st_size, 1, fp) != 1) { + free(data); + return(0); + } + + rl = (_RuneLocale *)data; + lastp = data + sb.st_size; + + rl->variable = rl + 1; + + if (memcmp(rl->magic, _RUNE_MAGIC_1, sizeof(rl->magic))) { + free(data); + return(0); + } + + rl->invalid_rune = ntohl(rl->invalid_rune); + rl->variable_len = ntohl(rl->variable_len); + rl->runetype_ext.nranges = ntohl(rl->runetype_ext.nranges); + rl->maplower_ext.nranges = ntohl(rl->maplower_ext.nranges); + rl->mapupper_ext.nranges = ntohl(rl->mapupper_ext.nranges); + + for (x = 0; x < _CACHED_RUNES; ++x) { + rl->runetype[x] = ntohl(rl->runetype[x]); + rl->maplower[x] = ntohl(rl->maplower[x]); + rl->mapupper[x] = ntohl(rl->mapupper[x]); + } + + rl->runetype_ext.ranges = (_RuneEntry *)rl->variable; + rl->variable = rl->runetype_ext.ranges + rl->runetype_ext.nranges; + if (rl->variable > lastp) { + free(data); + return(0); + } + + rl->maplower_ext.ranges = (_RuneEntry *)rl->variable; + rl->variable = rl->maplower_ext.ranges + rl->maplower_ext.nranges; + if (rl->variable > lastp) { + free(data); + return(0); + } + + rl->mapupper_ext.ranges = (_RuneEntry *)rl->variable; + rl->variable = rl->mapupper_ext.ranges + rl->mapupper_ext.nranges; + if (rl->variable > lastp) { + free(data); + return(0); + } + + for (x = 0; x < rl->runetype_ext.nranges; ++x) { + rr = rl->runetype_ext.ranges; + + rr[x].min = ntohl(rr[x].min); + rr[x].max = ntohl(rr[x].max); + if ((rr[x].map = ntohl(rr[x].map)) == 0) { + int len = rr[x].max - rr[x].min + 1; + rr[x].types = rl->variable; + rl->variable = rr[x].types + len; + if (rl->variable > lastp) { + free(data); + return(0); + } + while (len-- > 0) + rr[x].types[len] = ntohl(rr[x].types[len]); + } else + rr[x].types = 0; + } + + for (x = 0; x < rl->maplower_ext.nranges; ++x) { + rr = rl->maplower_ext.ranges; + + rr[x].min = ntohl(rr[x].min); + rr[x].max = ntohl(rr[x].max); + rr[x].map = ntohl(rr[x].map); + } + + for (x = 0; x < rl->mapupper_ext.nranges; ++x) { + rr = rl->mapupper_ext.ranges; + + rr[x].min = ntohl(rr[x].min); + rr[x].max = ntohl(rr[x].max); + rr[x].map = ntohl(rr[x].map); + } + if (((char *)rl->variable) + rl->variable_len > (char *)lastp) { + free(data); + return(0); + } + + /* + * Go out and zero pointers that should be zero. + */ + if (!rl->variable_len) + rl->variable = 0; + + if (!rl->runetype_ext.nranges) + rl->runetype_ext.ranges = 0; + + if (!rl->maplower_ext.nranges) + rl->maplower_ext.ranges = 0; + + if (!rl->mapupper_ext.nranges) + rl->mapupper_ext.ranges = 0; + + return(rl); +} |
